Apparatus

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sensors Mode-S transponder

A2597F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N250WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A2597F
Octal
50454577
Decimal
10,639,743
Country
US
Tail
N250WN
Type
B737
No current signal · last broadcast Jul 26, 20:35 UTC
Flights observed
485
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:35 UTC

Last known position

Most recent position reported by Mode-S A2597F.

Country allocation

The ICAO 24-bit address A2597F falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
SWA3243 - 6 2026-06-26
SWA714 Southwest Airlines 5 2026-07-17
SWA411 Southwest Airlines 5 2026-07-21
SWA3212 Southwest Airlines 5 2026-07-24
SWA2223 Southwest Airlines 5 2026-05-22
SWA716 - 4 2026-06-30
SWA4392 - 4 2026-07-14
SWA3601 - 4 2026-06-27
SWA1283 - 4 2026-07-03
SWA1050 - 4 2026-07-09
SWA8530 - 3 2026-04-13
SWA792 - 3 2026-07-04
SWA791 - 3 2026-06-26
SWA781 Southwest Airlines 3 2026-06-13
SWA758 Southwest Airlines 3 2026-07-06
SWA726 Southwest Airlines 3 2026-06-21
SWA419 Southwest Airlines 3 2026-06-26
SWA4076 - 3 2026-07-02
SWA3599 - 3 2026-06-16
SWA353 - 3 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1411 LGB → OAK Jul 26, 18:45 UTCJul 26, 20:30 UTC1h 45m
2026-07-26 SWA1411 LGB → OAK Jul 26, 16:15 UTCJul 26, 17:40 UTC1h 25m
2026-07-26 SWA2220 BWI → ALB Jul 26, 01:25 UTCJul 26, 03:50 UTC2h 25m
2026-07-26 SWA2220 BWI → ALB Jul 26, 01:24 UTCJul 26, 03:48 UTC2h 24m
2026-07-25 SWA1816 MDW → PHL Jul 25, 22:05 UTCJul 26, 00:20 UTC2h 15m
2026-07-25 SWA1816 MDW → PHL Jul 25, 22:01 UTCJul 26, 00:12 UTC2h 11m
2026-07-25 SWA4982 SAT → SAN Jul 25, 19:00 UTCJul 25, 20:35 UTC1h 35m
2026-07-25 SWA1568 PHX → DEN Jul 25, 17:15 UTCJul 25, 18:00 UTC45m
2026-07-25 SWA1568 PHX → DEN Jul 25, 14:10 UTCJul 25, 16:00 UTC1h 50m
2026-07-25 SWA282 LAX → OAK Jul 25, 10:45 UTCJul 25, 12:30 UTC1h 45m
2026-07-24 SWA4995 MSY → LAS Jul 24, 21:15 UTCJul 24, 22:15 UTC1h 0m
2026-07-24 SWA871 SJD → HOU Jul 24, 17:45 UTCJul 24, 19:05 UTC1h 20m
2026-07-24 SWA871 SJD → HOU Jul 24, 16:40 UTCJul 24, 19:04 UTC2h 25m
2026-07-24 SWA870 HOU → SJD Jul 24, 13:15 UTCJul 24, 14:20 UTC1h 5m
2026-07-24 SWA870 HOU → SJD Jul 24, 13:14 UTCJul 24, 15:20 UTC2h 6m
2026-07-24 SWA2162 PHX → AUS Jul 24, 09:40 UTCJul 24, 11:30 UTC1h 50m
2026-07-24 SWA4797 MDW → FLL Jul 24, 04:35 UTCJul 24, 06:20 UTC1h 45m
2026-07-24 SWA3212 RSW → MDW Jul 24, 00:45 UTCJul 24, 03:35 UTC2h 50m
2026-07-23 SWA3212 RSW → MDW Jul 23, 22:15 UTCJul 23, 23:30 UTC1h 15m
2026-07-23 SWA3212 RSW → MDW Jul 23, 20:00 UTCJul 23, 21:15 UTC1h 15m
2026-07-23 SWA949 IND → BWI Jul 23, 18:00 UTCJul 23, 19:05 UTC1h 5m
2026-07-23 SWA2082 SJC → GEG Jul 23, 13:40 UTCJul 23, 17:00 UTC3h 20m
2026-07-22 SWA17 DAL → HOU Jul 22, 17:05 UTCJul 22, 17:50 UTC45m
2026-07-22 SWA2466 SJC → ONT Jul 22, 14:40 UTCJul 22, 15:45 UTC1h 5m
2026-07-22 SWA2466 SJC → ONT Jul 22, 14:37 UTCJul 22, 16:10 UTC1h 33m
2026-07-22 SWA2466 SJC → ONT Jul 22, 12:30 UTCJul 22, 13:30 UTC1h 0m
2026-07-21 SWA1440 - Jul 21, 18:15 UTCJul 21, 20:20 UTC2h 5m
2026-07-21 SWA1440 DCA → MCO Jul 21, 18:12 UTCJul 21, 20:14 UTC2h 2m
2026-07-21 SWA411 BNA → MDW Jul 21, 14:20 UTCJul 21, 16:25 UTC2h 5m
2026-07-21 SWA411 BNA → MDW Jul 21, 11:05 UTCJul 21, 13:20 UTC2h 15m
2026-07-21 SWA279 SJC → SAN Jul 21, 04:55 UTCJul 21, 06:25 UTC1h 30m
2026-07-21 SWA279 SJC → SAN Jul 21, 03:15 UTCJul 21, 03:50 UTC35m
2026-07-21 SWA4424 MDW → ALB Jul 21, 01:00 UTCJul 21, 02:10 UTC1h 10m
2026-07-20 SWA2110 DAL → LAX Jul 20, 22:05 UTCJul 21, 00:05 UTC2h 0m
2026-07-20 SWA1553 BNA → BOS Jul 20, 18:55 UTCJul 20, 21:05 UTC2h 10m
2026-07-20 SWA1553 BNA → BOS Jul 20, 18:55 UTCJul 20, 20:58 UTC2h 3m
2026-07-20 SWA1680 RSW → BWI Jul 20, 16:10 UTCJul 20, 17:50 UTC1h 40m
2026-07-20 SWA3884 STL → AUS Jul 20, 13:20 UTCJul 20, 14:55 UTC1h 35m
2026-07-20 SWA3884 STL → AUS Jul 20, 13:20 UTCJul 20, 14:52 UTC1h 32m
2026-07-20 SWA1783 BOS → BWI Jul 20, 11:05 UTCJul 20, 12:25 UTC1h 20m
2026-07-20 SWA4340 BWI → BOS Jul 20, 01:55 UTCJul 20, 02:30 UTC35m
2026-07-19 SWA4418 SAN → OAK Jul 19, 21:00 UTCJul 20, 00:05 UTC3h 5m
2026-07-19 SWA4418 SAN → OAK Jul 19, 20:58 UTCJul 20, 00:03 UTC3h 5m
2026-07-19 SWA2068 OGG → OAK Jul 19, 17:40 UTCJul 19, 19:35 UTC1h 55m
2026-07-19 SWA2068 OGG → OAK Jul 19, 15:25 UTCJul 19, 16:40 UTC1h 15m
2026-07-19 SWA3609 - Jul 19, 12:45 UTCJul 19, 13:40 UTC55m
2026-07-18 SWA2624 MDW → PHX Jul 18, 23:20 UTCJul 19, 00:10 UTC50m
2026-07-18 SWA1276 - Jul 18, 20:40 UTCJul 18, 22:05 UTC1h 25m
2026-07-18 SWA1276 DEN → ICT Jul 18, 18:55 UTCJul 18, 19:55 UTC1h 0m
2026-07-18 SWA444 PHX → DEN Jul 18, 16:18 UTCJul 18, 17:45 UTC1h 27m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N250WN page for operator, model, and routing details .

Mode-S A2597F frequently asked

What is Mode-S code A2597F?
A2597F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N250WN.
Where is Mode-S A2597F registered?
Mode-S code A2597F is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A2597F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2597F, octal 50454577, decimal 10,639,743.
What flights does A2597F operate?
Mode-S A2597F has broadcast 20 distinct callsigns, including SWA3243, SWA714, SWA411, SWA3212, SWA2223.